Transmission for a hybrid drive arrangement, hybrid drive arrangement, vehicle, method for operating the hybrid drive arrangement, computer program and storage medium

ABSTRACT

The invention relates to a transmission (100) for a hybrid drive arrangement which can be coupled to two drive assemblies (7, 8), comprising an input shaft (10) and an output shaft (11), at least one first and one second shifting element (SE1, SE2), at least one double planetary gear (5). The input shaft (10) can be coupled to the first sun gear of the double planetary gear (5) by means of the first shifting element (SE1), and the input shaft (10) can be coupled to the ring gear of the double planetary gear (5) by means of the second shifting element (SE2) and the output shaft (11) is coupled to the planet carrier of the double planetary gear (5).

BACKGROUND OF THE INVENTION

The invention relates to a transmission for a hybrid drive arrangement.Furthermore, the invention relates to a hybrid drive arrangement havinga transmission, to a vehicle having a hybrid drive arrangement, and to amethod for operating the hybrid drive arrangement, and to a computerprogram and a machine-readable storage medium.

Transmissions for hybrid drive arrangements are known from the priorart. For example, WO2010/009943 A1 discloses a double clutchtransmission which makes the operation of a hybrid vehicle possible byway of internal combustion engine, by way of electric motor, and by wayof the two drive units together. Transmissions of this type are complex,heavy and expensive. There is a requirement for transmission topologieswith a reduced mechanical complexity, a decreased installation spacerequirement and a reduced weight.

In the following text, the term “coupled” or “attached” is used in thesense of a fixed connection. In contrast to this, the term “can becoupled” comprises both fixed and switchable connections within thecontext of the present description. If a switchable connection isspecifically meant, the corresponding shifting element is as a rulespecified explicitly, in particular a brake or a clutch. If, incontrast, a fixed, rigid or non-rotating connection is specificallymeant, the term “coupled” or “attached” is as a rule used and the use ofthe term “can be coupled” is dispensed with. The use of the term “can becoupled” without specification of a specific shifting element thereforeindicates the intentional inclusion of the two types. This distinctiontakes place solely for the benefit of improved comprehensibility and, inparticular, in order to clarify where the provision of a switchableconnection instead of a fixed connection or coupling which can as a rulebe realized more easily is absolutely necessary. The above definition ofthe term “coupled” or “attached” is therefore in no way to beinterpreted to be so narrow that couplings which are insertedarbitrarily for bypassing purposes are derived from its literal sense.

SUMMARY OF THE INVENTION

A transmission for a hybrid drive arrangement is provided, whichtransmission can be coupled to two drive units, having an input shaftand an output shaft, at least a first and a second shifting element, andat least one double planetary transmission, in particular a Ravigneauxset, with a first and a second sun gear, a planetary carrier and aninternal gear, it being possible for the input shaft to be coupled bymeans of the first shifting element to the first sun gear of the doubleplanetary transmission, and it being possible for the input shaft to becoupled by means of the second shifting element to the internal gear ofthe double planetary transmission, and the output shaft being coupled tothe planetary carrier of the double planetary transmission.

A transmission for a hybrid drive arrangement is provided. For theoperation of the hybrid drive arrangement, two drive units can becoupled to the transmission. The transmission comprises an input shaftand an output shaft, at least a first and a second shifting element, andat least one double planetary transmission which is also known as aRavigneaux set. Said double planetary transmission has two sun gears ofdifferent size, a common planetary carrier and a common internal gear.In particular, the double planetary transmission comprises first planetswhich orbit the first sun gear and mesh with the first sun gear and withthe internal gear. In particular, second planets orbit and mesh with thesecond sun gear, and mesh with the first planets. In particular, theplanetary carrier fixes the spacings of the first and second planetsfrom one another and in each case among one another. The input shaft isfixedly coupled to the first shifting element and the second shiftingelement and thus is connected in a non-rotatable manner thereto. Withinthe context of the description, a coupling should be understood as aconnection which is configured rigidly, for example in one piece, forexample by means of a shaft, or with a fixed transmission ortransmission stage. Furthermore, the input shaft can be coupled by meansof closing of the first shifting element to the first sun gear of thedouble planetary transmission. Furthermore, the input shaft is coupledto the second shifting element and by means of closing of the secondshifting element can be coupled to the internal gear of the doubleplanetary transmission. The output shaft is coupled to the planetarycarrier of the double planetary transmission. In particular, the outputshaft can be coupled to an output. The output is, in particular, a shaftor an axle which transmits the movement of the output shaft to themechanical drive train of a vehicle, for example to a differential or toa drive wheel. A transmission is advantageously provided which transmitsthe rotational speed and the torque which prevails at the input shaft tothe output shaft in accordance with the transmission ratios in thetransmission in the case of a closed first and/or second shiftingelement. In the case of an open first and second shifting element, theinput shaft is decoupled from the output shaft. A fixed transmissionratio between the input shaft and the output shaft results in the caseof a simultaneously closed first and second shifting element.

In another refinement of the invention, the transmission comprises athird shifting element which is set up to brake or to release theinternal gear of the double planetary transmission.

A third shifting element is provided for the transmission, which thirdshifting element makes releasing or braking of the internal gear of thedouble planetary transmission possible, in particular connecting of theinternal gear or supporting of the internal gear on a fixed point or ona housing of the transmission. The braking of the internal gearcomprises the reduction of the rotational speed of the internal gear, inparticular to a standstill of the internal gear. The releasing of theinternal gear comprises the releasing of the brake, with the result thatthe internal gear accelerates in accordance with the forces which act onthe internal gear. In addition to the abovementioned operating modes,further operating modes can advantageously be set by way of theabove-described topology of the transmission with the first, second andthird shifting elements. A further transmission ratio between the inputshaft and the output shaft thus results for example in the case of aclosed first shifting element, an open second shifting element and aclosed third shifting element.

In another refinement of the invention, the transmission comprises afourth shifting element which is set up to brake or to release theinternal gear of the second planetary transmission.

A fourth shifting element is provided which can release or brake thesecond sun gear of the double planetary transmission, in particular canconnect or couple the second sun gear of the double planetarytransmission to a fixed point or the housing, or can support the secondsun gear on the housing. The braking of the second sun gear comprisesthe reduction of the rotational speed of the second sun gear, inparticular as far as the standstill of the second sun gear. Thereleasing of the second sun gear comprises the disengaging of the brake,with the result that the second sun gear accelerates in accordance withthe forces which act on the second sun gear. In addition to theabovementioned operating modes, further operating modes canadvantageously be set with the above-described topology of thetransmission by way of the first, second, third and fourth shiftingelement. A further transmission ratio between the input shaft and theoutput shaft thus advantageously results for example in the case ofclosing of the first and the fourth shifting element and opening of thesecond and the third shifting element.

In a further refinement of the invention, the first and/or the secondshifting element comprise/comprises a clutch. In order to connect theinput shaft to the aforementioned components of the planetarytransmission, the first and/or the second shifting element are/isconfigured as a clutch. A clutch of this type can be, in particular, adry clutch, a wet clutch or a claw coupling. Possibilities for acontrollable connection of the input shaft to the components of theplanetary transmission are advantageously provided.

In another refinement of the invention, the third and/or the fourthshifting element comprises a brake.

The third and/or the fourth shifting element are/is configured as abrake, in particular as a dry brake or wet brake or as a claw coupling.A possibility for controllably releasing and braking the internal gearsof the first or of the second planetary transmission is advantageouslyprovided.

In another refinement of the invention, a first drive unit, inparticular an internal combustion engine, can be coupled to the inputshaft, and/or a second drive unit, in particular an electric machine,can be coupled to the first sun gear of the double planetarytransmission.

The first drive unit can be attached on the input shaft on the inputside. The second drive unit can be coupled to the first sun gear of thedouble planetary transmission. For generator operation of the seconddrive unit, for example an electric machine, for example in order tocharge a battery, the first drive unit or the internal combustion enginecan advantageously be connected to the electric machine by means ofclosing of the first shifting element and opening of the second, thirdand fourth shifting element. Since the two drive units are decoupledhere from the output shaft and therefore no torque is transmitted to theoutput shaft, said charging can take place in the case of an outputshaft which is at a standstill, for example, that is to say, forexample, during the standstill of a vehicle (standstill charging). Inthe case of an output shaft which is, for example, at a standstill, adirect transmission of the rotational energy of the first drive unit tothe second drive unit or vice versa, for example for starting acombustion engine, is made possible.

Power-split operation of the transmission (eCVT mode) is made possibleby way of closing of the second shifting element and opening of thefirst, third and fourth shifting element. Here, the first drive unitacts on the internal gear of the double planetary transmission and theelectric machine acts on the first sun gear of the double planetarytransmission, the planetary carrier of which is connected to the outputshaft. Here, the transmission ratio between the input shaft and theoutput shaft can be varied continuously over a wide range by means ofspecification of a rotational speed or a torque of the second driveunit. Power-split operation (also called eCVT mode) is advantageouslymade possible, in the case of which both the propulsion power at theoutput shaft and the charging power for the generator operation of theelectric machine can be set independently of one another. Charging at astandstill or in crawling mode (>0 km/h to approximately 10 km/h) and asmooth comfortable transition from the standstill charging mode into thecrawling charging mode and the driving mode is advantageously madepossible with a fixed transmission, that is to say in a fixed gear.

In the case of an open first and second shifting element, the inputshaft and therefore the first drive unit are decoupled from the outputshaft. In the case of an additionally closed third shifting element andopen fourth shifting element, the second drive unit is connected via afirst transmission ratio to the output shaft, with the result thatdriving of the output shaft can take place only by means of the seconddrive unit. In the case of an open third shifting element and a closedfourth shifting element, the second drive unit is coupled via a secondtransmission ratio to the output shaft. This is a second transmissionratio for sole drive by means of the second drive unit. By means of (inparticular, metered) closing of the first shifting element, the firstdrive unit can be driven and, for example, can be started if the firstdrive unit is an internal combustion engine while driving by means ofthe second drive unit.

There is also the possibility that the first drive unit is configured,for example, as an electric machine, and the second drive unit isconfigured, for example, as an internal combustion engine. In aconfiguration of this type, different functionalities and operatingmodes for the interaction of the components can result by means of thetransmission, which are not described further here.

In another refinement of the invention, the transmission ratios of thetransmission are changed without the traction force being interrupted.

Changing of the transmission ratios of the transmission, in particularshifting into another gear or into another operating mode of thetransmission, takes place without the traction force being interruptedif, in particular, for the change from one operating mode of thetransmission into another, one of the shifting elements retains itsstate, a second one of the shifting elements is transferred from aclosed state into an open state, and a third one of the shiftingelements is transferred from an open state into a closed state. Atransmission is advantageously provided, in the case of which changingof the gear stages without an interruption of the traction force is madepossible.

In another refinement of the invention, the transmission comprises anactuator for actuating at least one of the shifting elements in a mannerwhich is dependent on a predefined operating specification signal.

An actuator is provided which actuates at least one of the shiftingelements in a manner which is dependent on a predefined operatingspecification signal, for example a requested torque, a predefinedrotational speed, or a defined operating point of the drive unit. Saidparameters of the operating specification signal can be related to theoutput shaft of the transmission, to the input shaft, or to the shaftswhich are to be connected to the drive units. Control of thetransmission is advantageously made possible.

Furthermore, the invention relates to a hybrid drive arrangement havinga transmission, the hybrid drive arrangement comprising a second driveassembly and/or a pulse inverter, an electric energy source or a firstdrive unit.

A hybrid drive arrangement having an above-described transmission isprovided. The hybrid drive arrangement comprises a second driveassembly. In particular, the hybrid drive arrangement comprises a pulseinverter, an electric energy source and/or a first drive unit. Thesecond drive unit is coupled or connected, in particular, to the firstsun gear of the double planetary transmission. The pulse inverter isprovided, in particular, for supplying the second drive unit, inparticular an electric machine. To this end, in particular, it convertsthe electric energy of an electric energy source, for example a batteryand/or a fuel cell. The first drive unit is coupled or connected, inparticular, to the input shaft. A hybrid drive arrangement which is setup for use in a vehicle is advantageously provided.

Furthermore, the invention comprises a vehicle having a described hybriddrive arrangement. A vehicle which comprises a hybrid drive arrangementis advantageously provided.

Furthermore, the invention comprises a method for operating a hybriddrive arrangement having a transmission. The method comprises thefollowing steps:

determining of an operating specification signal;

actuating of at least one of the shifting elements in order to set thefunctionality of the transmission in a manner which is dependent on theoperating specification signal (BV).

A method for operating a hybrid drive arrangement having a transmissionis provided. Here, an operating specification signal is determined. Atleast one of the shifting elements is closed or opened in order to setthe functionality of the transmission or of a corresponding operatingmode in a manner which is dependent on the operating specificationsignal. The operating specification signal is predefined in a mannerwhich is dependent on an operating strategy, a driver request oraccelerator pedal, a battery management system or other systems whichare available, for example, in a vehicle. In a manner which is dependenton said operating specification signal, the shifting elements areactuated in order to set the corresponding functionality or theoperating mode of the transmission, in particular the clutches or brakesare closed or opened. The functionality of the transmission or theoperating mode are, in particular, the different transmission ratios ofthe various gear stages, or the various modes or operating modes, forexample generator operation of the second drive unit in the case of astationary output shaft or the eCVT mode. A method for operating ahybrid drive arrangement is advantageously provided.

Furthermore, the invention relates to a computer program which is set upto carry out the described method.

Furthermore, the invention relates to a machine-readable storage medium,on which the described computer program is stored.

BRIEF DESCRIPTION OF THE DRAWINGS

It goes without saying that the features, properties and advantages ofthe transmission relate and/or can be applied accordingly to the hybriddrive arrangement, the vehicle and/or the method, and vice versa.Further features and advantages of embodiments of the invention resultfrom the following description with reference to the appended drawings.

In the following text, the invention is to be described in greaterdetail on the basis of some figures, in which:

FIG. 1 shows a diagrammatic illustration of the hybrid drive trainarrangement having a transmission,

FIG. 2 shows a shifting matrix of the transmission,

FIG. 3 shows a diagrammatically illustrated vehicle having a hybriddrive train arrangement, and

FIG. 4 shows a diagrammatically illustrated method for operating ahybrid drive train arrangement.

DETAILED DESCRIPTION

FIG. 1 shows a hybrid drive train arrangement 200 having a first driveunit 7, in particular an internal combustion engine, and a second driveunit 8, in particular an electric machine, and a transmission 100. Inparticular, the hybrid drive train arrangement comprises a pulseinverter 60 for supplying the second drive unit 8 with electric energy.Furthermore, the hybrid drive train arrangement 200 comprises, inparticular, an electric energy source 70 which is connected to the pulseinverter 60. The transmission 100 comprises the input shaft 10 and theoutput shaft 11. Furthermore, the transmission 100 comprises a doubleplanetary transmission 5, in particular a Ravigneaux set with a firstand a second sun gear, a common planetary carrier and a common internalgear. In particular, the double planetary transmission 5 comprises firstplanets which orbit the first sun gear and mesh with the first sun gearand with the internal gear. In particular second planets orbit and meshwith the second sun gear, and mesh with the first planets. Inparticular, the planetary carrier fixes the spacings of the first andsecond planets from one another and in each case among one another.Furthermore, the transmission 100 comprises a first shifting element SE1and a second shifting element SE2. The first shifting element SE1, inparticular a clutch, is set up to connect or to disconnect the inputshaft 10 to/from the first sun gear of the double planetary transmission5. The second shifting element SE2, in particular a clutch, is set up toconnect or to disconnect the input shaft 10 to/from the internal gear ofthe double planetary transmission 5. Furthermore, the transmission 100can comprise a third shifting element SE3 and a fourth shifting elementSE4. The third shifting element SE3, in particular a brake, is set up torelease or to brake the internal gear of the double planetarytransmission 5, in particular by the brake connecting the internal gearto a fixed point or, for example, supporting it on the housing (notshown) of the transmission 100. The shifting element SE4, in particulara brake, is set up to release or to brake the second sun gear of thedouble planetary transmission 5, in particular by the brake connectingthe internal gear to a fixed point or, for example, supporting it on thehousing (not shown) of the transmission 100. Furthermore, thetransmission is set up to be coupled or connected to a first drive unitvia the input shaft 10 for operation. To this end, FIG. 1 shows that theshaft of the drive unit 7 is connected to the input shaft 10 via a spurgear set. The second drive unit 8, in particular an electric machine, iscoupled or connected to the first sun gear of the planetary transmission5 and to the shifting element 1 for the operation of the transmission100, as shown in FIG. 1. For an optimization of the transmission ratios,the output shaft 11 is connected, for example, to a differential 14, forexample via an output 12, in particular a spur gear set, via whichdifferential 14 the movements are transmitted to the wheels 310. Anactuator 50 is provided for actuating the shifting elements, whichactuator 50 carries out the method for operating the hybrid drivearrangement having the transmission. For reasons of clarity, the controllines between the actuator 50 and the individual shifting elements SE1 .. . SE4 are indicated only as an arrow and are not illustratedcompletely. The communication between the shifting elements SE1 . . .SE4 and the apparatus can take place by means of the control lines andalso by means of a bus system or in a wireless manner.

FIG. 2 shows a shifting matrix of the transmission. The individualshifting elements SE1 . . . SE4 are indicated in the columns, and anapproximate transmission ratio which results between one of the driveunits and the output shaft is shown in the last column by way ofexample. The different gear stages, gears or operating modes of thetransmission are indicated in the rows. Crosses in the shifting matrixshow which of the shifting elements have to be activated, in order thatthe corresponding gear or operating mode is set. Here, activation of theshifting elements means, in particular, that a clutch is closed or abrake is actuated, with the result that a force can be transmitted viathe clutch from one shaft to a further shaft or a force can betransmitted by means of the brake to a fixed point, in particular thetransmission housing. It can be seen from the shifting matrix that,depending on the combination of the four shifting elements, four gearsG1 . . . G4 can be set, the first gear G1 having the highesttransmission ratio and the fourth gear G4 having the lowest transmissionratio. In the case of the gears G1 . . . G4, there is preferably a fixedrotational speed ratio in each case between the first drive unit 7 andthe output shaft 11 in accordance with the transmission ratio which isspecified in the last column. In the gears G1 . . . G4, the output shaftis driven either solely by the first drive unit 7 or together with thesecond drive unit 8. In particular, these are internal combustion engineor hybrid gears, for example if the first drive unit 7 is an internalcombustion engine and the second drive unit 8 is an electric machine.Said gears also make it possible to raise the load point of the internalcombustion engine, with the result that the electric machine can beoperated as a generator, and charging of a battery can take place duringoperation, in particular driving operation of a vehicle. The gears E1 .. . E2 or operating modes, in which only the second drive unit isconnected to the output shaft 11, are also shown in the following linesof the matrix. To this end, in particular, the first and the secondshifting element has to be open, in order that there is no connection tothe first drive unit. These are, in particular, electric motor gears,for example if the second drive unit is an electric machine. A vehiclecan advantageously be operated locally without emissions in said gears.Depending on whether the internal gear of the double planetarytransmission 5 is blocked by means of the third shifting element SE3 orthe second sun gear of the double planetary transmission 5 is blocked bymeans of the fourth shifting element SE4, the transmission ratios whichare specified in the shifting matrix between the second drive unit 8 andthe output shaft 11 result by way of example.

Closing of the second shifting element and opening of the furthershifting elements (SE1 . . . SE4) results in power-split operation, theeCVT1 mode which makes a mutually independent propulsion power at theoutput shaft 11 and charging power of the second drive unit 8 possible.In particular, said operating mode is suitable for hybrid driving off inthe case of a low battery charging state, since stepless changing of thetransmission ratios and therefore, in particular, stepless accelerationare possible in the case of a simultaneous generator operation of thesecond drive unit 8.

A further mode CH1 (also called standstill charging) results if thefirst shifting element SE1 is closed and all other shifting elements areopen. Here, the drive units 7 and 8 are coupled to one another, therenot being a connection to the output shaft 11. In said operating mode,the second drive unit 8 can be driven by means of the first drive unit 7during the standstill of the output shaft, in particular of a vehicle,in particular can be used in the manner of a generator for charging anelectric energy source 70, in particular a battery. As an alternative,the first drive unit 7 can also be driven by means of the second driveunit 8, and, for example, an internal combustion engine start or adiagnosis of the internal combustion engine can be carried out if thefirst drive unit 7 is an internal combustion engine and the second driveunit 8 is an electric machine.

FIG. 3 shows a vehicle 300 with wheels 310, the vehicle comprising ahybrid drive arrangement 200, as described above.

FIG. 4 shows a flow chart of a method 400 for operating a hybrid drivearrangement 200 having a transmission 100. The method starts with step405. In step 410, an operating specification signal BV is determinedand, in step 420, at least one of the shifting elements SE1 . . . SE4 isactuated in order to set the functionality of the transmission 100 in amanner which is dependent on the operating specification signal BV. Themethod ends with step 425. Here, the operating specification signal BVis either a parameter for a physical variable in the transmission 100,such as a torque or a rotational speed or a power output to betransmitted which is to prevail at or to be transmitted to a componentof the transmission 100. Said components are, in particular, the inputshaft 10, the output shaft 11, but also the parameters at the driveunits 7, 8 or the shifting elements SE1 . . . SE4. Moreover, theoperating specification signal BV can also represent a defined operatingmode such as one of the four gears G1 . . . G4 or the two gears E1 . . .E2 which are operated only by way of the second drive unit, or else canrepresent the special functions eCVT1 or standstill charging CH1. In amanner which is dependent on said operating specification signal BV, theshifting elements SE1 . . . SE4 are actuated in accordance with theshifting matrix, in order to shift the transmission 100 into thecorresponding gear or operating mode. For a shift between the individualgears or operating modes with no interruption of the tractive force, itis necessary that one of the shifting elements SE1 . . . SE4 retains itsstate before and after the shifting operation, a further shiftingelement moving during the shifting from the open into the closed state,whereas another shifting element moves from the closed into the openstate.

1. A transmission (100) for a hybrid drive arrangement, the transmission(100) configured to be coupled to two drive units (7, 8), thetransmission comprising: an input shaft (10) and an output shaft (11),at least a first and a second shifting element (SE1, SE2), and at leastone double planetary transmission (5), with a first and a second sungear, a planetary carrier, and an internal gear, the transmissionfurther configured to couple the input shaft (10) via the first shiftingelement (SE1) to the first sun gear of the double planetary transmission(5), couple the input shaft (10) via the second shifting element (SE2)to the internal gear of the double planetary transmission (5), andcouple the output shaft (11) to the planetary carrier of the doubleplanetary transmission (5).
 2. The transmission as claimed in claim 1,further comprising a third shifting element (SE3) configured to brakethe internal gear of the double planetary transmission (5).
 3. Thetransmission as claimed in claim 1, further comprising a fourth shiftingelement (SE4) configured to brake the second sun gear of the doubleplanetary transmission (5).
 4. The transmission as claimed in claim 1,wherein the first, the second, or both the first and second shiftingelements (SE1, SE2) comprise a clutch.
 5. The transmission as claimed inclaim 2, wherein the third, the forth, or both the and the fourthshifting elements (SE3, SE4) comprise a brake.
 6. The transmission asclaimed in claim 1, further configured to couple an internal combustionengine to the input shaft (10), and to couple an electric machine thefirst sun gear of the double planetary transmission (5).
 7. Thetransmission as claimed in claim 1, further configured to changetransmission ratios of the transmission (100) without traction forcebeing interrupted.
 8. The transmission as claimed in claim 1, furthercomprising an actuator (50) for actuating at least one of the shiftingelements (SE1 . . . SE4) in a manner which is dependent on a predefinedoperating specification signal (BV).
 9. A hybrid drive arrangement (200)comprising a transmission (100) including an input shaft (10) and anoutput shaft (11), at least a first and a second shifting element (SE1,SE2), and at least one double planetary transmission (5), with a firstand a second sun gear, a planetary carrier, and an internal gear, thetransmission further configured to couple the input shaft (10) via thefirst shifting element (SE1) to the first sun gear of the doubleplanetary transmission (5), couple the input shaft (10) via the secondshifting element (SE2) to the internal gear of the double planetarytransmission (5), and couple the output shaft (11) to the planetarycarrier of the double planetary transmission (5), a pulse inverter (60),and an electric energy source (70).
 10. A vehicle (300) having a hybriddrive arrangement (200) as claimed in claim
 9. 11. A method (400) foroperating a hybrid drive arrangement (200) having a transmission (100)including an input shaft (10) and an output shaft (11), at least a firstand a second shifting element (SE1, SE2), and at least one doubleplanetary transmission (5), with a first and a second sun gear, aplanetary carrier, and an internal gear, the transmission furtherconfigured to couple the input shaft (10) via the first shifting element(SE1) to the first sun gear of the double planetary transmission (5),couple the input shaft (10) via the second shifting element (SE2) to theinternal gear of the double planetary transmission (5), and couple theoutput shaft (11) to the planetary carrier of the double planetarytransmission (5), the method comprising: determining (410) of anoperating specification signal (BV); and actuating (420) of at least oneof the shifting elements (SE1 . . . SE4) in order to set thefunctionality of the transmission (100) in a manner which is dependenton the operating specification signal (BV).
 12. (canceled)
 13. Anon-transitory, computer-readable storage media containing programinstructions that when executed on a computer cause the computer tocontrol a transmission having an input shaft (10) and an output shaft(11), at least a first and a second shifting element (SE1, SE2), and atleast one double planetary transmission (5), with a first and a secondsun gear, a planetary carrier, and an internal gear, the transmissionfurther configured to couple the input shaft (10) via the first shiftingelement (SE1) to the first sun gear of the double planetary transmission(5), couple the input shaft (10) via the second shifting element (SE2)to the internal gear of the double planetary transmission (5), andcouple the output shaft (11) to the planetary carrier of the doubleplanetary transmission (5), to: determine (410) of an operatingspecification signal (BV); and actuate (420) of at least one of theshifting elements (SE1 . . . SE4) in order to set the functionality ofthe transmission (100) in a manner which is dependent on the operatingspecification signal (BV).